Questions tagged [docker-networking]
57 questions
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How to setup firewall rules for rootless docker
I am new with docker and have installed docker in rootless mode, which works just fine.
The problem is that with this the guides for firewall with docker does not work (I have no network-interface 'docker0' nor a iptables-chain 'DOCKER-USER') and I…
Max.-F.
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API requests delayed among docker swarm cluster's nodes & containers
In the process of migrating our docker infrastructure to a docker swarm cluster we are experiencing performance issues when containerized APIs are calling outside ressources (e.g. elasticsearch queries to elastic cloud, or other API's on MS Azure,…
Vincent Chalmel
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Create UDP forwarders imitating multiple network elements that use the same port
Given:
I have a containerized service that sends UDP packets to a list of network elements (3rd party syslog sink servers).
Each target network element is specified by IP address, its port number is constant, the same for each node.
I need to…
Mikaelblomkvistsson
- 101
- 2
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Nginx can't be reached inside the docker container. What have I left out?
I've run out of ideas as to why I can't connect to this nginx inside or outside of the docker. I can understand that networking might cause a problem outside the machine, but even inside the docker nginx is not responding even though you can see it…
boatcoder
- 548
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Create a containerized reverse proxy with multiple sites on a separate IP Address
I administer a small cluster which has several different services running, including grafana monitoring as a container, cloud file storage as a container (nextcloud), and a FreeIPA server on bare metal. I want to put the cloud storage service behind…
Folshost
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1 answer
Does bridge networking mode in ECS limit number of tasks on container instance
I have an EC2 registered to ECS cluster on which tasks can run. Originally I chose the awsvpc network mode so every task(container) had it's own ENI(IP). But I ran into limitation at…
Rohini
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Remote mysql server in docker container - access using macvlan and wireguard?
Situation:
Several VPS servers around the US connected to my laptop via wireguard mesh network.
For wireguard mesh network Im using tool called innernet (https://github.com/tonarino/innernet).
So basically its like my laptop and vps servers are on…
Dannyboy
- 133
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Which connections/interfaces are in zone 'docker'?
Executing the below command on Ubuntu 20.04 LTS
sudo firewall-cmd --list-all-zone
gives me these
block,
dmz,
docker (active),
drop,
external,
home,
internal,
public,
trusted,
work,
The thing which is bothering me is the current one selected shown…
Farhan Shirgill Ansari
- 101
- 2
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1 answer
Cannot bind port 111 on docker on WSL2 on windows, but port is (apparently?) currently free
Setup
I have this setup:
Windows 10 pro with WSL2 with an Ubuntu 20.04 inside.
Inside the Ubuntu, I have a running docker engine that has been working perfectly for over during months, exposing multiple ranges of ports with dozens of images and…
Xavi Montero
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docker-proxy port 5000 not obeying firewall-cmd rules
I am running Red Hat Enterprise Linux 7.9, where I'm trying to block docker-proxy TCP port 5000 via firewall-cmd. I am using the default public zone as the only active zone and have tried the following individually and in combination:
Removed port…
Dibakar Aditya
- 101
- 2
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votes
0 answers
Docker create ipvlan network : Gateway Address already in use
I have one simple server with a bunch of docker containers running on an ipvlan network, which uses 172.22.0.0/16 as it's net. In there is a gateway and everything is working great.
I need to run one container in a different vlan, so I created an…
Ulrar
- 367
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- 22
-1
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1 answer
Docker network layer resolving container name to wrong IP adress
In a simplified example, I have 3 Docker containers located on 2 Docker networks:
Container_A : Connected to Network_1 and Network_2
Container_B : Connected to Network_1
Container_C : Connected to Network_2
When running ping Container_B from inside…
Hannes Knutsson
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- 3